The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 11, 2019
Filed:
Dec. 11, 2015
Jfe Steel Corporation, Tokyo, JP;
Tomoyuki Okubo, Tokyo, JP;
Kohei Kurihara, Tokyo, JP;
Yoshihiko Oda, Tokyo, JP;
Hiroaki Nakajima, Tokyo, JP;
JFE STEEL CORPORATION, Tokyo, JP;
Abstract
In the production of a non-oriented electrical stress sheet by hot rolling a steel slab containing, by mass %, C: not more than 0.005%, Si: not more than 8.0%, Mn: 0.03-3.0%, P: not more than 0.2%, S: not more than 0.005%, Al: not more than 3.0%, N: not more than 0.005%, Ni: not more than 3%, Cr: not more than 5%, Ti: not more than 0.005%, Nb: not more than 0.003%, As: not more than 0.005% and O: not more than 0.005%, subjecting to one cold rolling or two or more cold rollings interposing an intermediate annealing therebetween after conducting a hot band annealing or without conducting a hot band annealing and subjecting to a finish annealing, an average heating rate from 600° C. to 700° C. during the heating process in the finish annealing is set to not less than 50° C./sec.